Improvement in cop-tubes



L.. n. BENNETT.

M f Cup-Tubes.

No.156,972. Patented N0v.17,1874.

I l es 1 PATENT Orrrc.

IMPROVEMENT IN COP-TUBES.

rlp eci cation forming part of Letters Patent N o. 156,972, dated November 17, 1874; application led February 28, 1873.

To all whom t may concern Be it known that I, LORENZO DonT BEN- NETT, of Providence, in the county of Provi dence and State of Rhode Island, have invented an Improvement in Cop-Tubes, of Which the following is a specification:

This invention relates to an improvement in the tubes which are placed upon the spindles of spinning-machines, for the purpose of receiving the yarn, and are afterward transferred, together with the yarn wound around them, tothe shuttle of a loom, and are technically called cop-tubes.

The present improvement consists in coating the ordinary paper cop-tubes with a steamheat and oil proof enamel, which is hardened by baking. This enamel preserves the shape of the tubes, and forms a permanently hard and smooth surface, to which the yarn will not adhere. The enamel coating serves further to form end enlargements, which hold the yarn in place.

Figure l represents an ordinary paper ooptuhe. Fig. 2 is a longitudinal section; and Fi 3 is a perspective View of this improved cop-tube.

In Fig. 1 of the drawing is shown an ordidinary paper cop-tube, a, formed by winding a strip of paste-covered paper around a spindle, until it acquires sufficient thickness to give it the required strength. The tubes'thus formed are dried and cut to the proper length, when they are ready for use. But in their use much diliculty and loss have been encountered, from the fact that it is generally found necessary to steam the cops, as the tubes when covered with yarn are called, before using them in the process ot' weaving, which operation softens the tubes so much that they are soon rendered useless, and not only this, butv the yarn becomes entangled in the sott ened material of the tubes and is broken, seldom ruiming entirely oft' the tubes, which causes much waste. This loss has been so serious that coptubes of metal have been constructed and used, in order to obviate the difficulty, but with indifferent success, as they a-re heavy andcostly, and when formed of soft metal sometimes discolor a portion ofthe yarn.

My invention enables the manufacturer to retain the paper tube with its advantages, While it secures the advantages possessed byy the metallic tube Without any of its disadvantages.

The sectional view given in Fig. 2 represents one-half of one of my improved tubes, dividedlongitudinally, and shows the layers of paper, c, and enamel b, as they occur in the finished article. The external appearance ofthe improved tube is represented in Fig. 3. The tube presents a perfectly smooth surface with the exception of a slight enlargement, c, at each end, which is found to be of service in retaining the yarn in its place.

In carrying out my improvement, I take the paper tube c, shown in Fig. 1, and apply to it a coating, b, of enamel, covering it completely, and giving it a hard and smooth surface, which is not affected in any deleterious manner by steam-heat or oil. This allows the yarn to run freely to the end, so as to leave no Waste, while it preserves the shape and pliability of the paper tube. l The enameled tubes are easier to handle than ordinary paper tubes, owing to their smoothness and freedom from clinging Waste, and can be seen more readily at night, owing to their dark color, while their size and Weight are not materially increased, and their ultimate cost is reduced, the enameled tubes lasting much longer than those formed simply of paper in the ordinary manner.

The liquid enamel for coating these tubes v is compounded as follows: Linseed-oil, two gallons, Prussian blue, one ounce; asphalt, half a pound; bone-black or lamp-black, half a pound.

This compound is boiled for several hourssay, six-and, when cool enough to permit,

naphtha is used to thin the mixture to a proper consistency, which may be that of varnish. The tubes are then dipped in this preparation, and put on pins. They are next placed /in an oven, and baked for several hours-say, twelveat a temperature of from 1500 to 2500 Fahrenheit. This last operation completely hardens the composition, and concludes the process. The product is a paper cop-tube, having a hard smoothv surface, formed by an enamel coating, which is steam-heat and oil proof, as hereinbefore set forth. The enamel iu setting on the paper tube collects slightly at the ends, and hardening in this shape forms the end enlargement c.

The following is claimed as new in this invention, namely:

1. The enameled paper-cop tube, herein described, having a permanently hard and smooth oil and steam proof surface, as speci fied, as a new article of manufacture.

2. The enameled paper-cop tube, herein described, having a permanently hard and smooth surface and end enlargements, as specified.

In testimony that I claim the foregoing I have hereunto set my hand this 20th day of February, 1873.

L. D. BENNETT.

Witnesses:

WALTER ALLEN, JAS. L. EWIN. 

